—Dave called you about half an hour ________,Anna.—Thank you.I’ll call him back.
—Can you tell me _____________?—About two months ago.
Tom is really upset about losing the game, but I think he will ________ it soon.
While I ___________ TV, the bell rang.
Xu Qian is a funny girl. She loves to __________ jokes.
—How do you study English well?—__________ working hard.